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Analog Electronics

Analog Electronics
The room temperature resistivity of pure silicon is

 50
 300
 3000
 6

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Analog Electronics
In a MOSFET, the polarity of the inversion layer is the same as that of the

  minority carriers in the drain .
  majority carries in the source .
  charge on the gate electrode.
  majority carries in the substrate.

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Analog Electronics
If the base current is 100 mA and the current gain is 30, the emitter current is

 3 A.
 3.33 mA.
  3.1 A.
 10 A.

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Analog Electronics
Which of the following is trivalent impurity ?

 Antimony
None of these
 Silicon
 Boron

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Analog Electronics
If the current gain is unknown in an emitter-biased circuit, you cannot calculate the

 emitter voltage.
 emitter current.
 collector current.
  base current.

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Analog Electronics
When the two input terminals of a differential amplifier are grounded

  the ac output voltage is zero.
  the collector currents are equal.
  an output error voltage usually exists.
  the base currents are equal.

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